Protective sol-gel coating with hydrophobic properties

In the paper the authors consider the possibility of protective SiO$_2$ coatings based on sol-gel method by hydrolysis of organometallic compounds of silicon in water-alcohol mixture. We study the rheology of film-forming solutions prepared according to the time and storage conditions of the solution. We describe the optimal parameters of application and heat treatment to obtain homogeneous coatings. The mechanical resistance to abrasion as the main type of coatings tested for strength and adhesion to the substrate surface is investigated. The authors give analysis of the properties of water repellency of coatings obtained depending on the composition and treatment temperature.